本文選題：固有應(yīng)變 + 焊接變形　； 參考：《工具技術(shù)》2017年11期

【摘要】：為提高固有應(yīng)變法在預(yù)測焊接變形應(yīng)用中的準(zhǔn)確度,以T型接頭為算例,采用SYSWELD仿真軟件對多個(gè)方案進(jìn)行數(shù)值模擬,研究了固有應(yīng)變施加方式對焊接變形預(yù)測的影響,進(jìn)而提出了一種新的固有應(yīng)變施加方式。為了驗(yàn)證此方法的準(zhǔn)確性,將三種設(shè)計(jì)方案的計(jì)算結(jié)果與熱彈塑性有限元方法的計(jì)算結(jié)果進(jìn)行分析比較。結(jié)果表明:在以焊縫中間線為軸心、焊縫直角邊的1/2為半徑的范圍作為固有應(yīng)變的施加區(qū)域時(shí),其變形預(yù)測精度明顯提高,變形量更加逼近于熱彈塑性有限元分析方法的預(yù)測結(jié)果。
[Abstract]:In order to improve the accuracy of the inherent strain method in the prediction of welding deformation, the numerical simulation of several schemes was carried out by using SYSWELD software, and the effect of the inherent strain on the prediction of welding deformation was studied with T-joint as an example. Furthermore, a new way of applying inherent strain is proposed. In order to verify the accuracy of this method, the calculation results of three design schemes are compared with those of thermoelastic-plastic finite element method. The results show that the accuracy of deformation prediction is improved obviously when the center of the weld is the center of the weld and the radius of the right side of the weld is 1 / 2 as the applied region of the inherent strain. The deformation is closer to the prediction result of thermoelastic-plastic finite element method.
【作者單位】： 華東交通大學(xué);西南交通大學(xué)牽引動(dòng)力國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金(51665015) 江西省自然科學(xué)基金(20161BAB206161) 牽引動(dòng)力國家重點(diǎn)實(shí)驗(yàn)室開放課題(TPL1611)
【分類號】：TG404

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本文編號：2047220